nice descriptive poll... I don't use brackets on single line ifs... sometimes I make it all one line, sometimes I make it two lines, depending on the context.
For example, in PHP I have a wrapper function for mysql_query() that stores every query I run, any MySQL errors they generate, and their execution times in a global variable. If I have a problem with a page, I output those variables at the end of the page to try to figure it out. So every time I have a mysql query, I'd use something like:
if($debug==1) mysql_query_debug($sql); else mysql_query($sql);